Landscape, Ornamentals, Nursery, and Turf Edition

Seasonal updates on ornamental, nursery, and turf pests.
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Rutgers Weather Forecasting - Meteorological Information important to commercial agriculture.

South Jersey Calibration Grower Meeting

March 25, 2026

2:30 pm – 6:00 pm

Rutgers Agricultural Research & Extension Center                 

121 Northville Road, Bridgeton, NJ

Program

2:30 PM – Registration

3:00 PM – Welcome and Introductions

3:15 PM – Airblast Sprayer Calibration Techniques

Chris Lovenduski, Central Jersey Equipment

4:15 PM – Early season management in peaches

 Anne Nielsen PhD, Professor and Extension Specialist in Entomology

4:45 PM – Light fare & refreshments (pre-registration required)

5:00 PM – Coverage Counts: How to make the most of a pesticide application

Karly Regan PhD, Certis Biologicals

5:30 PM – Pesticide Safety and Regulations for Specialty Crops

Janine Spies PhD, Rutgers Cooperative Extension

6:00 PM – Pesticide Recertification Credits and Adjourn

NJDEP Pesticide Recertification Credits are anticipated.

Registration cost per person: $10.

Cash or check (made payable to Rutgers The State University) will be collected at the door.

Pre-register by Thursday March 19.

Click here to register: South Jersey Calibration Event Registration – Fill out form

Program Chair: Janine Spies, Agriculture and Natural Resources County Agent III, Statewide Program Leader in Fruit IPM

If you have any questions please contact Janine Spies: (352) 231-6330, janine.spies@rutgers.edu

North Jersey Calibration Grower Meeting

March 24, 2026

2:30 pm – 6:00 pm

Clifford E. & Melda C. Snyder Research & Extension Farm                                  

140 Locust Grove Road Pittstown, NJ

Program

2:30 PM – Registration

3:00 PM – Welcome and Introductions

3:15 PM – Airblast Sprayer Calibration Techniques

Chris Lovenduski, Central Jersey Equipment

4:15 PM – Importance of Calibration for Optimal Pest Control and Resistance Management

Kaitlin Quinn, Rutgers Cooperative Extension

4:45 PM – Light fare & refreshments (Pre-registration required)

5:00 PM – Coverage Counts: How to make the most of a pesticide application

Karly Regan PhD, Certis Biologicals

5:30 PM – Pesticide Safety and Regulations for Specialty Crops

Janine Spies PhD, Rutgers Cooperative Extension

6:00 PM – Pesticide Recertification Credits and Adjourn

NJDEP Pesticide Recertification Credits are anticipated.

Registration cost per person: $10.

Cash or check (made payable to Rutgers The State University) will be collected at the door.

Click here to register: North Jersey Calibration Event Registration – Fill out form

Pre-register by Wednesday March 18.

If you have any questions please contact Kim Cromelin: (908) 788-1338, kfrey@co.hunterdon.nj.us

Program Chair: Janine Spies, Agriculture and Natural Resources County Agent III, Statewide Program Leader in Fruit IPM

ALERT – Potential for Ambrosia Beetle flight early next week – if you regularly have issues with this pest – take notice

The last few seasons we have seen an upswing in ambrosia beetle activity in nursery production, principally in field grown nursery stock of thin barked trees (commonly – dogwood, honey locust, magnolia, maple, redbud, zelkova, styrax, Prunus spp.). Based on evidence from multiple lines of trap collection data throughout the United States, adult female flights appear to be correlated to consecutive days (2-3) of 70F temperatures (highs) with daily average air temps around 65F (max+min/2). That is extremely close to what we will have throughout most areas of NJ early next week, based on 10-day weather forecasts. Note: this is historically very early for treatment of this pest and it will get colder the following days, however, we have missed control opportunities over multiple years so take treatment into consideration if you regularly encounter this pest.

Consider using pyrethroids in your production areas next Monday or Tuesday (weather dependent) if this pest has been a regular problem.

Contact insecticides: 

  • Pyrethroids [3A]: –thrins (bifenthrin, permethrin, etc.) – Pyrethroids longer lasting residual activity is why these materials are so effective against ambrosia beetles. 
  • Systemic insecticides DO NOT WORK

 

Potential for adult female ambrosia beetle flight 2026

Stay informed:

  • Sign up for the 2026 – Rutgers Ornamental IPM Program – click here to sign up
  • First webinar 4/14/26
  • Program is free, but registration is required – Registration includes:
    • Site visit to your ornamental nursery/farm from Rutgers agents
    • Delivered printed IPM resources (Guides, factsheets, bulletins)
    • Free pheromone & sticky trap kit + guidance on setup/monitoring (for commercial nursery/greenhouse and Christmas tree farms)
    • Access to live bi-weekly webinars (Zoom)
    • (First session TUESDAY 4/14 @ 12PM)
    • Every Second and Fourth, Tuesday, April through September

[Read more…]

Approaching boxwood blight season – 2026 (threat this week in Central and Southern NJ)

March weather is always unpredictable, however, if we have sustained periods of increased temperatures (above 50F) and spring rains, boxwood blight (BWB) can become an issue quickly.

[pictorial tri-fold] Common Boxwood Pests and Diseases (click-here). This includes Box Tree Moth images. Print the PDF out double-sided, then fold.

If you suspect Boxwood Blight and would like to have this verified – please contact the Rutgers Plant Diagnostic Laboratory (click here) for sample submission instructions

Boxwood Blight Risk Assessment as of 3/2/2026
Region Location Station

CODE

MON TUE WED THU FRI SAT
2-Mar 3-Mar 4-Mar 5-Mar 6-Mar 7-Mar
Southern Upper Deerfield NJ50 Very Low  Very Low  Very Low  Infection Risk Low Low 
Southern Vineland NJ73 Very Low  Very Low  Low  Infection Risk Infection Risk Infection Risk
Southern Millville KMIV Very Low  Very Low  Low  Infection Risk Low  Low 
Southern Bridgeton D4116 Very Low  Very Low  Very Low  Infection Risk Low  Low 
Southern Mays Landing G4661 Very Low  Very Low  Low  Infection Risk Low  Low 
Central Howell / Freehold NJ10 Very Low  Very Low  Very Low  Low  Low  Low 
Central Princeton F0303 Very Low  Very Low  Very Low  Low  Infection Risk Very Low 
Central Somerville F6261 Very Low  Very Low  Very Low  Low  Infection Risk Infection Risk
Northern High Point NJ59 Very Low  Very Low  Very Low  Very Low  Low  Low 
Northern Randolph AU137 Very Low  Very Low  Very Low  Very Low  Low  Low 
Northern Belvidere E7133 Very Low  Very Low  Very Low  Very Low  Low  Very Low 
Please check your local boxwood blight risk at (https://uspest.org/risk/boxwood_app)  

There is a minor potential for boxwood blight infections this Thursday, Friday, & Saturday throughout Southern and Central NJ. Incoming rains, coupled with warmer temperatures may initiate boxwood blight infections this week. This will likely extend into the following week with anticipated higher temperatures.

  • It is time to begin protective fungicide applications in boxwoods throughout the state if you have not already done so. 

  • If BWB is important to your business Use the USPEST – PUSH Alerts – (click here) – to setup weekly email alerts. Create an account, watch the tutorial, and then set up your subscriptions. You select which locations (as many as you like), days you want to receive emails, and what you would like to receive alerts about (BWB and a variety of other pests and diseases). Rutgers is not directly affiliated, however this is an incredible tool. 

[Read more…]

Farm Safety Needs Assessment

The Rutgers Farm Health and Safety Working Group is conducting a survey to evaluate the priority needs of New Jersey farmers for training and resource development related to safety and health.  As a New Jersey farmer, you are invited to complete this survey. Click here to access the survey and learn more.  [Read more…]

Turfgrass ProFACT and CORE Pesticide credits – February 4 and 6, Williamstown, Woodstown, and Millville

Protecting Water Quality in the Landscape
and
Pesticide Safety for Turfgrass Professionals

Pesticide and ProFACT Credits:
• Commercial Pesticide Applicator License – 02 CORE credits
• Turfgrass Professional Fertilizer Applicator Certification – 02 ProFACT credits

Date Time Location Registration
February 4, 2026 10 am – 12.15 pm Peach Country Tractor, 1463 N Tuckahoe Rd., Williamstown Charles, 856-226-3834 or charles
@peachcountrytractor.com
February 4, 2026   2 pm –   4.15 pm Rutgers Cooperative Extension, 51 Cheney Rd., Woodstown Sal, 856-769-0090 or mangiafico
@njaes.rutgers.edu
February 6, 2026 10 am – 12.15 pm Rutgers Cooperative Extension, 291 Morton Ave., Millville Sal, 856-769-0090 or mangiafico
@njaes.rutgers.edu

PDF link: https://salem.njaes.rutgers.edu/wp-content/uploads/2026/01/2026_02_ProFACT_Flyer_Final.pdf